Tank-car valve and method of attaching same



, March` 19, 1929; I v. WIELQUGHBY 'MNR C'AR vALvE AND METHOD 9E ATTAGHING SAME Filed uy' E, 1928 Patented 'Man 19, 1929.

UNITED STATES.

1,706,092 PATENT OFFICE.

Application filed May 8, 1928.

rlhis invention relates to discharge outlets for Vtank, cars and more particularly to the means for securing the outlet valvein the discharge outlet casing. At present many ot' the tank cars in use are equipped with a discharge outlet valve which is held to its seat by spring pressure and which may be forced from its seat by a bar inserted through the discharge outlet casing by unauthorized persons desiring to remove the tank contents.

It is an object of this invention to provide a discharge outlet valve which can be used with the discharge outlet casings now used with spring seated valves and which can not be operated by force applied from below, and it is also an object of this invention to pro- Vide a method andV means by which the valve may be secured to the discharge outlet casings now used with spring seated valves without necessitating the removal ot the discharge outlet casing from the tank.

In the drawings Figure lis a central Vertical section, taken as on the line l-l of Fig. 2, of a discharge outlet casing of the type used with spring seated valves and having a drill jig mounted therein;

Fig. 2 is a top plan view of discharge outlet casing and drill jig as shown in Fig. l;

Fig. 3 is a central vertical section of the discharge outlet casing of Fig. 1 and of the cage of the valve mechanism it is proposed to substitute for the spring pressed valve; the means for drawing the cage to its seat in the outlet casing being shown partly in section and partly in elevation; J Fig. 4 is a partial central vertical section of the'discharge outlet casing of Fig. l with the substitute valve mechanism applied thereto; and

Fig. 5 is a fragmentary section similar to Fig. 4 but drawn to a larger scale and showing the means for securing the valve cage in t-he discharge outlet housing and of preventing leakage between the valve cage and the discharge valve casing.

In the drawings a discharge outlet casing l of the type used in connection with spring pressed discharge outlet valves is shown secured to the tank bottom sheet 2 by rivets 4. In order to provide the tank with a discharge outlet valve of a type which cannot be forced open from the bottom, `such as is shown in Patent No. 1,534,139, Ostrander, April 21,

Serial N0. 276,077.

1925, the discharge outlet casing is drilled to provide a plurality of symmetrically spaced bores 6 inclined to a horizontal plane and extending outwardly ironi the discharge passage of the casing as shown in Figs. l, 4 and 5. To insure uniform positioning of t-he bores 6, a drill jig 8 is provided which comprises a circular member l0 having a dished web l2 ot' less depth than the rim portion 14. The rim portion 14 is of a diameterI to snugly tit the upper portion or" the discharge outlet casing l and is provided with an annular' shoulder 16 which engages with the upper surface 17 of the outlet casing l outside of the usual valve seat 18. Symmetrically spaced portions of the upper surface oi' the web are formed as flat inclined surfaces as at 20 and are provided with circular openings 22 drilled perpendicular to the upper surfaces 2O oi'l the web l2 and lined with bushings 24. The bushed openings 22 guide a drill 26, shown in broken lines, by which the bores 6 are formed in the casing l, thus providing a uniform positioning of the bores 6 in all casings l.

To prevent movement of the drill jig 8 during the drilling operation, the drill jig 8 is secured in position by a bolt 28 which, at one end, is provided with a head 30 which is inserted through an elongated opening 32 in the web l2 and turned to engage in a depressed seat 34 extending in the web l2 at right angles to the opening 32. The other end of the bolt 28 extends through an opening in the collar or washer 36 and is threaded to receive a nut 38 which is adjusted to engage the collar 36 and jig 8 with the respective ends of the outlet casing l.

As shown in Fig. 4, the valve mechanism substituted for the spring seated valve comprises a cage 40, a valve 42 having a threaded stem 44 and a collar or nut 46 threaded on the stem 44 and held against continued rotation in the cage 40 so as to raise or lower the valve 42 upon rotation of the valve as shown in the patent referred to above. The valve cage 40 is provided with an annular skirt or Hang@ 48 at its bottom of suc-h diameter as to snugly lit the upper portion of the discharge outlet casing. At the upper end oi' the flange 48 the cage 40 is provided with an annular outwardly projecting shoulder 50 and between the shoulder 50 and flange 48there is formed a recess which reso that .the lopenings ceives a suitable packing 52. The flange 48 is provided with radially extending threaded openings 54 positioned to correspond with the bores 6 in the outlet. casing 1 and having set screws 56 threaded therein, the outer ends ci set screws 56 being tapered as at 58 to correspond to the inclination of ythe bores 6. rEhe iange 48 is also provided with diametrically opposed openings 6() formed in downwardly projecting portions of the flange 48 60 come below the openings 54.

vTo insure the proper seating vol the valve cage .in .the casing 1, tongs .62 are provided comprising arms 64vhaving oppositely projectinglugs 66=at the outer ends which may be enga-gedin theopenings and pivotally connected-fat their other rends to the eye oi bolt 67 r`'Thefother end'oii bolt 67 projects through afcollaror washer 68 and is threaded to re-V ceivea nut 70 which is adjusted to bring the collar 68 against the bottom of the casing 1- and .exert pressure `on the cage 4() when the lugs66are in engagement in the openings 60.

ln converting, for use with a valve mechanism that cannot Ybe opened vfrom below, a discharge outlet'casing designed for use with a spring-seated valve and secured toa tank, afterthe removal oi' the spring seated valve, the drill jig 8 yis positioned in the outlet casing 1 and secured in position by adjusting the aint 38 to bring thecollar 86- intoengagement with the bottom of the outlet casi-ng 1. rlhe bores 6 are then formed by a suitable drill 26 guided in the bushed opening 22, the

borings being discharged through openings 62 engaged in 72leading from the openings 22. rlhe drill jig8 is then removed and the valve cage-40 inserted `in the outlet casing 1 with the set screws 56 -alined'with the bores 6, the tongs the openings 60 and the nut 70 adjusted to bring the packing 52 firmly against the former valve seat 18 o'l' the out le't casing 1. vWith the valve cage 40 thus heldin position, lthe set'screws 56 are tightened, the taper 58 of the set screws and the inclination of the bores 6 tending 'to lincrease the pressure of the packing 52 on the valve seat18 as the setscrews are tightened.` After the tightening of the set screws 56, the'toiigs 62 Iare released .and removed andthe valve 42 and collar 46 inserted in the cage. The valve voperating rod, not'shown, is then inserted in the openingin the valve stem 44.

What is claimed is:

1. The combination wit-ha discharge outlet casinghaving a plurality of inclined bores projectingoutwardly 4from the :inner surface thereof, 'of a valve cage having a plurality ot radially projectingfset screws orengaging in-said'hores.

2. Theicombination with a dischargeoutlet casing having a. plurality of inclined bores projecting outwardly rom the inner sura'ce thereof, of a valve cage having a plurality vafdischarge outlet ifitting a drill jig to the outlet casing, drilling: a plurality of; downwardly,inclinedbores ,extending outwardly vfrom thezdischargevpassage of the casingy Aremoving the drill gjig, lhaving a plurality of `radially vidisposed set of radially projecting set screws for engaging infsaid boresthe ends of said set screws having a taper corresponding to the inclination of said bores whereby tightening of said set screws tends to draw said valve vcageinto 'the outlet casing.

The combination with a discharge outlet casing having a plurality of downwardly inclined. outwardly .extending bores, of a valve cage having set screws Jfor engaging said bores. c l

4. The combinationwvith,a discharge outlet casing having a plurality of downwardly inclinedoutwardly extending bores, of a valve cage having set screws for engaging VAsaid bores, said vsetscrews .being-at an angle to said bores.

5. Thecombination witlia discharge outlet casing havinga plu-ralityof downwardly inclinedloutwardly extending bores, cfa valve cage having` set screws for. .engaging said bores, saidsetnscrews beingat an :angle yto said bores .and `having itaperedzends ,correspending in inclination .to said bores.v

6. The-combination with-a discharge outlet casing having a plurality of downwardly inclined outwardly extending hores, O la valve lcage having set screws 4Jfor .engaging said .bores and :packing between lsaid valve cage .and casing, said `set lscrewsiheing. :at Aan angle to said bores and having tapered :ends

lcorresponding in inclination. :to said fbores whereby tightening :of said set yscrews @tends to increase the pressure y'onsaid-packing.

' 7. vrlhe :method of securing =a valvepcage :to a discharge 'outlet :casing which comprises drilling a plurality of outwardly extending inclined bores, applyinga .valve cage having radiallyA projecting set screws corresponding tothe bores yof the casing, applying pressure to the valvecage vtoi'orcethecage toits seat in lthe :outlet .casingiand tightening :the set screws to secure the cage in the casingfand invcrease the pressureof the cageon itsrseat.

8. l@Ehe method ot-securing la valvev cage to a discharge outlet :casing which :comprises drilling a pluralityof downwardly :inclined bor-es. extending outwardly from thea-discharge passage having' radially projecting set screws corresponding to the ,bores of lthe casing, appl-ying pressuretothe valve cage to `force the :cage :to :its :seat inthe outlet casing and tightening the set'fscrews,Y to secure :the cage .in Vthe icasing 4and -.increaseithe .pressure ofthecage :on itsseat.

9. The method of seciiringfavalve cagerto `casing whiohcomprises guided by the drill jig, applying a yvalveicage screws positioned to correspond ,f with the bores of the outlet casing, applying pressure ico llili 10 ing the jig,

to force the valve cage to its seat in the outlet easing and tightening the set screws to secure the cage in the easing and increase the pressure of the cage on its seat.

l0. The method of securing a valve mechanism to a discharge outlet casing compris` ing fitting a drill jig to the outlet casing, drilling a pluality of inclined bores in the outlet casing guided by the drill jig, removapplying a Valve cage having a plurality of radially disposed set screws positioned to Correspond with the bores of the outlet casing, applying screw operated tongs to force the cage to its seat in the outlet easing, tightening the set screws to secure the cage in the easing and increase the pressure of the cage on its seat, releasing and removing the tongs and inserting the valve parts in the cage.

In Witness whereof I have hereunto set my han d.

VICTOR WVILLOUGHBY. 

